Senior Platform Security Engineer

Spade

1d•$210,000 - $240,000•Hybrid

About The Position

Spade is a data and AI platform that turns messy transaction strings into structured, verified records. As a Senior Platform Security Engineer, you'll own the security of Spade's production edge that connects us to our enterprise bank customers. You'll work across certificate lifecycle operations, network security architecture, and vulnerability management on a small, high-ownership team where your decisions directly protect the systems processing billions of transactions.

Requirements

6+ years of experience in platform, infrastructure, or network security engineering, with hands-on ownership of production systems
Deep experience with PKI and certificate lifecycle management
Strong understanding of TLS/mTLS
Hands-on AWS networking and security experience
Working knowledge of OAuth 2.0 (client-credentials flow, JWT validation) and familiarity with certificate-bound token patterns
Experience setting security standards and working with engineering teams to adopt them

Nice To Haves

Fintech or payments background; experience integrating with bank or financial institution network edges
Experience with cloud infrastructure and tools like AWS CDK
PCI DSS or SOC 2 technical control implementation
Prior experience on a small or early-stage security team

Responsibilities

Own and operate mutual-TLS certificate infrastructure for enterprise bank onboarding and product operations
Build and maintain the security workflow for private network connectivity, including endpoint tenancy mapping and connection monitoring
Operate webhook delivery security from signing-secret rotation, client-certificate management, and delivery-failure response for outbound integrations
Drive vulnerability remediation end-to-end from application and infrastructure scanning through verified closure
Set and codify secure-build standards for the engineering team
Continuously improve our security posture by collaborating across engineering, product, and go-to-market to deliver value to customers and internal stakeholders